The tribology behaviors of diamond and silicon dioxide (SiO2)
nanoparticles were examined via Molecular dynamics simulations; four
cases were simulated. At low velocity and low load, the nanoparticles
separated the two blocks from each other and acted as ball-bearings. The
plastic deformation, temperature distribution, and friction force were
all improved due to the action of the nanoparticles. However, the
crushing of the SiO2 nanoparticles was accompanied by deformation-
induced loss of the rolling effect, when the load was increased. Without
nanoparticles, a transfer layer formed at high velocity and low load.
The two nanoparticles provided support for a certain duration. However,
at high velocity and high load, the support effect of these
nanoparticles was lost in a short sliding time. (C) 2015 Elsevier Ltd.
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